how can i specify to take the middle digits of a string?

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George
George 2012-12-2
like if i have 426,692,449,089,
i need a variable to assume the value of 692,449,
it could also be 653217,
i would need the value 5321,
??
  2 个评论
Richard
Richard 2012-12-2
First question, are these actually strings or numbers? Secondly what do you mean by middle digits? In the first example you provided you have 12 digits and need the outcome to have 6 digits, then in the second example you have 6 digits and the outcome is 5 digits. Could you please elaborate on your problem.

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Walter Roberson
Walter Roberson 2012-12-2
If it is a string then index it. For example
S = '426,692,449,089,';
S(5:12)

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